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  <script>
    var kthDistinct = function (arr, k) {
      var d = 0
      for (var i = 0; i < arr.length; i++) {
        if (arr.indexOf(arr[i]) === arr.lastIndexOf(arr[i])) {
          d++;
          if (d == k) {
            return arr[i]
          }
        }

      }
      return "";

    }
    console.log(kthDistinct(["d", "b", "c", "b", "c", "a"], 2));
  </script>

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